Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 339 for “"Buck"”.
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High-Frequency Modeling and Analyses for Buck and Multiphase Buck Converters
… etc. For the VR designs using multiphase buck converters, one of the results from these stringent challenges is a large amount of output capacitors, which is undesired from both a cost and a motherboard real estate perspective. In order to save the output capacitors, the control-loop …
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Multilevel Buck Converter Topologies and Their Applications
Multilevel buck topologies eliminate the limitations of conventional buck converters in some specific areas. In this thesis, novel multilevel buck topologies are proposed to meet the specific requirements of two particular applications respectively. In case I, a two-stage power conversion structure …
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Design zero-voltage switching DC-DC buck converter
… frequency, zero-voltage-switching dc-dc buck converter for battery charger application. The design and analysis of dc�dc buck converter with integrated inductor is presented. The converter has been optimized to convert 12V input voltage to 5V at 1.5A maximum load current at 50MHz …
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Passing the buck: federalism and Canadian environmental policy
This thesis examines how the current division of federal and provincial responsibilities for environmental policy in Canada evolved, and the implications of that arrangement for protection of the environment. At a theoretical level, the example of environmental protection is used to explore the …
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Peak power tracking for a solar buck charger
… the design, implementation, and testing of a buck converter with peak power tracking. The peak power tracker uses a perturb and observe algorithm to actively track the solar panel's peak power point and a global sweep algorithm accounts for startup and multiple local maxima. The tracker takes …
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Alternative topologies for the low-voltage buck converter
… development of alternative topologies for the buck converter for low voltage dc dc conversion was performed. The three level buck, Resonant Switch Capacitor (ResSC), and Cuk-Buck2 were selected to be studied further based on the fact that they contain few components and were discovered in this …
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Mid- to Late-Paleozoic Deformation On Buck Mountain, Nevada
… structural mapping of the strata capping Buck Mountain in White Pine Co., Nevada, has documented two distinct episodes of folding. The structures and angular unconformities at Buck Mountain are consistent with late-Paleozoic deformation and regional unconformities documented previously …
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Design of zero-current switching DC-DC buck converter
… presents a zero-current switching (ZCS) DC-DC buck converter design, simulation and application. The converter control uses with ZCS technique to decrease the switching losses. Comparing to conventional buck converter, resonant buck converter includes a resonant tank equipped with resonant …
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Designing an ultra low quiescent current buck switching regulator
The new buck regulator proposed in this thesis was designed to operate with only a few micro-amps of supply current during no load output conditions, while maintaining low output voltage ripple. The regulator also has high efficiency for current loads above an amp to make the converter useful in a …
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Operation of buck regulator with ultra-low input voltage
Based on the LTC3621 and LTC3624, the designed buck regulator proposed in this thesis aims to lower the allowed input voltage and increase efficiency compared to the original part without making significant changes to quiescent current and part performance. This thesis will discuss additions and …
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On-chip current sensing for monolithic buck LED driver
… for on-chip sensing and regulating current for a buck LED driver, as compared to a common external solution. With the rise of LED use in common lighting applications, it becomes increasingly necessary to develop solutions that are simple to use and accurate. In this paper, much of the focus is on …
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Two-Phase Buck Converter Optimize by Echo State Network
Buck converter is a power converter which drops high input voltage into a low output voltage in high efficiency. With this characteristic, it has been used in a great number of applications. Optimized the maximum load to increase the buck converter's efficiency at the cost of light load efficiency …
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Population Size And Habitat Association Of Etheostoma Nebra, The Buck Darter, Using Abundance Modeling In The Buck Creek System, Cumberland River Drainage, Kentucky
<p>Etheostoma nebra (Buck Darter) is a recently described fish species confined to the Buck Creek system, Cumberland River drainage, Kentucky. A 2010-2012 survey of Buck Creek by Kentucky Department of Fish and Wildlife Resources personnel observed E. nebra at 2 of 47 historical sites. Within the …
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Design of a wide input supply range buck-boost converter
Buck-boost converters allow the flexibility of stepping-up and stepping-down the input supply to generate a regulated output, thus making them very attractive for applications with wide input supply range. Currently, off-the-shelf buck-boost converters require a minimum operating voltage of 1.8V. …
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Investigation Of A Floating Load Buck Dc-Dc Switching Converter
<p>A floating load buck DC-DC switching converter was analyzed, simulated, designed and prototyped. The floating load buck converter is first compared to the conventional buck converter. It was found that both the floating load buck converter and conventional buck converter exhibit similar …
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Application Considerations of Multiphase Monolithic Buck Regulators with Coupled Inductors
… multiphase design and application for monolithic buck switching regulators to multiply output current for low-voltage and power-intensive applications. In particular, the research incorporates coupled inductors to take advantage of its magnetic coupling between different phases to achieve minimal …
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Cascade Dual-Buck Inverters for Renewable Energy and Distributed Generation
… a new type of cascade inverters based on dual-buck topology and phase-shift control scheme. Compared to traditional cascade inverters, they have enhanced system reliability thanks to no shoot-through problems and lower switching loss with the help of using power MOSFETs. With phase-shift …
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A SiC JFET-Based Three-Phase AC PWM Buck Rectifier
… Utilizing the SiC JFET, a three-phase ac buck rectifier is then demonstrated with a 150 kHz switching frequency and a rated power of 2 kVA. Additionally, improvements are made to the charge control scheme for the buck rectifier allowing power factor compensation and reduction of input …
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Optimization of Power MOSFET for High-Frequency Synchronous Buck Converter
… require the use of a high-frequency synchronous buck converter (SBC) in order to achieve low cost, low profile, fast transient response and high power density. However, high frequency also causes more power loss on MOSFETs. Optimization of the MOSFETs plays an important role in the system …
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